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添加乙酸乙酯对生物油稳定性的影响

, PP. 667-672

Keywords: 生物油,热裂解,乙酸乙酯,稳定性

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Abstract:

?以稻草秸秆快速热裂解生物油为样品,选取乙酸乙酯作为添加剂,按不同质量分数(分别为1%、6%、11%、16%和21%)添加到生物油中,考察原始生物油(空白组)及乙酸乙酯组生物油理化特性随贮存时间的变化规律。结果表明,随着乙酸乙酯添加质量分数增大,各乙酸乙酯组(1%、6%、11%、16%和21%)生物油最终ph值比空白组分别提高0.66%、2.33%、3.65%、4.32%和6.31%;最终含水率比空白组分别降低10.90%、20.17%、28.19%、30.27%和35.10%;最终运动黏度比空白组分别降低13.69%、39.08%、57.99%、66.00%和73.58%。ft-ir和gc-ms分析结果表明,添加乙酸乙酯能抑制生物油老化反应。此外,gc-ms分析结果还证实乙酸乙酯可以减少生物油内有机酸含量。

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